Pump.



W. PATTEN. PUMP. APPLIOATION FILED MY 18. 1907.

Patented May 18 o m5 l fR ATTORNEYS v l. Mk

vus NoRRls Pen-s co., wnsumcmwfn. cA

UNITED STATES WILLIAM PATTEN, OF NEW YORK, N. Y.,

FATFIT @FFQFL PUMP.

Application filed May 18,

To all 'whom it may concern:

Be it known that I, WILLIAM PA'rrnN, of

the city of New York, borough of Manhattan, State of New York, have invented certain new and useful Improvements in Pumps, of which the following is a full, clear, and exact s eciiication, such as will enable others silled in the art to which it appertains to make and use the same.

My invention relates to a pump or compressor adapted to develop moderate pressures in gases. It is useful, for example, as a means of increasing the pressure in illuminating gas systems or -as an air blower for furnishing an air blast.

The a paratus is especially, though not necessari y, adapted to be direct-coupled to a driving motor, for example, to such a motor as is disclosed in my copending a plica tion filed May 18, 1907, Serial i umber 374,465.

An important object of my invention is to simplify as much as possible the construction of the pump or compressor, so that it may be produced at slight cost, and will not be subject to the necessity of continual repair, thus adapting it particularly to domestic installations where constant attention cannot be expected. In attaining this end, I provide induction and eduction valves which are wholly self operative requiring no valve actuating` mechanism and dispensing with the use of springs and equivalent parts thus reducing the ap aratus to the simplest possible form and a so rovide the piston construction which invo ves peculiarly arranged cup leathers insuring a hermetic connection with the cylinder walls, without involving the usual acking rings and avoiding the wei ht inci ent to a piston, the construction oi which is adapted to such rings.

My invention involves various other features of major or minor importance, all of which will be fully set forth hereinafter and particularly pointed out in the claim.

Reference is had to the accompanying drawings, which illustrate as an example, the referred embodiment of my invention, in w ich drawings,

Figure 1 is a sectional elevation of the inventlon; Fig. 2 is a detail section on the line 2-2 of Fig. 1; and Fig. 3 is a sectional plan on the line 3-3 of Fig. 1, indicating by dot- Speccation of Letters Patent.

Patented May 18, 1909.

1907. serial No. 374,464.

l ted lines the relative position ofthe eduction valves.

10 indicates the cylinder of the pump or compressor and 11 the supporting frame. This frame maybe ofany desired construe tion, for example, it may formpart of the motor frame and in such case the motor will face the pump and be direct-coupled thereto through the rod 12 which will then be an extension of the piston rod of the motor. Said rod 1.2 passes through a stuiiing box 13 at the near end'of the cylinder 10 and the extension or tail rod 12a projects into a tubulous rod guide 14 fastened to the opposite head of the cylinder and avoiding, by this arrangement, the necessity of a second stuffing box. The parts 12 and 12qu carry the piston of the pump or compressor and the tail. rod 12 serves to guide the piston in its movement.

The piston. is constructed of a metal disk or plate 15 secured on the piston rod by means of nuts 29 or the like, and at each side of the plate 1.5 are arranged cup leathers 16, i. c. cup-like members of leather, rubber or similar material, adapted to be acted on by the pressure within the cylinder causing them to expand against the cylinder walls and thus effecting a tight connection. For the purpose of holding the cup leathers against the cylinder Walls at all times and in position which will insure the before described action of the pressure within the cylinder', I provide rings 17 which are engaged with the sides of the cup leathers directly adjacent to the periphery ofthe piston, and. which have spring fingers 18 formed integral therewith and bearing against the cup leathers to press them outward. The rings 17 are held in place and the other parts of the piston kept 1n operative adjustment by means of spring rings 19 which are engaged against the inner sides of the spring fingers 18 and retain their position by reason of their resiliency. This construction, it will be seen, provides an extremely light iston and avoids the loss of power due to 'riction and inertia and at the same time insures a gas tight connection which prevents loss in the pump action.

The cylinder 10 is provided with ports 20 and 21 leading respectively to the cylinder ends and meeting directly adjacent to each other as shown in Figs. 1 and 3. These ports 2() and 21 communicate respectively with the separate chambers 22 of a thimble 23'which is preferably formed separate from the cylinder and fastened thereto. The chambers 22 of the thimble 23 also communicate with an induction chamber 24, this communication being controlled by gravity seating check valves 25 opening from the induction chamber 24 respectively into the chambers 22 and ports 20 and 21.

26 indicates a pipe connection leading to the induction chamber 24. The chambers 22 of the thimble 23 are distinct from each other by reason of the separating well and discharged into the T-connection or the like 28, return flow being prevented by gravity seating eduction valves 27'. One of these valves is shown by full lines in Fig. 2 Vand both are shown by dotted lines in Fig. 1, while in Fig. 3 their position relative to the ports 2O and 21 and the valves 25 are ind iv cated by the dotted circles.

In the operation of the pump upon reciprocation of the piston, for example rightward from the position shown in Fig. 1, the gas in the cylinder at the right of the piston will be forced through the port 2O and into the communicating chamber 22. The valve 25 of such chamber will be seated by the pressure developed and reinforced by gravity and this pressure in the chamber 22 will lift the valve 27 permitting the compressed gas to pass into the connection 28 and from the same to the reservoir pipe line or other device into which the compressed gas is to be discharged. Simultaneously the rarefaction brought about in the left hand end of the cylinder, port 21, and the communicating chamber 22 willV reinforce the action of gravity in seating the valve 27 communicating with said chamber at the same time lifting the induction valve 25 communicating with the chamber and drawing in a charge from the induction chamber 24 which charge, upon reversal of the iston movement, will be compressed and disc arged from the pump in the same manner as previouslyv described with respect to the charge passing through and from the port 20. y Y

It will thus be seen that I have provided an extremely simple and durable device by which moderate pressures may be eiectually accumulated. rlhe device, owing to its large broad areas and the absence .of loaded Y valves, may be operated with veryV little power and is especially adapted to domestic and similar installations where low pressures are required and where constant attention cannet be given to the apparatus.V A novel example of such use is afforded by the application cf the device to municipal gas service plants for the purpose of increasing, or whatV is commonly termed boosting, the Y' gas pressure, effecting thereby an economy in gas consumption and increased lighting capacity. Having thus described the preferred eme bodiinent of myinvention, what l claim as new and desire to secure by Letters Patent of the United Statesis:

A pump having a cylinder with a port in each end, the port at one end leading alongV the side of the cylinder to a point directly adjacent to the other port said ports havin a division wall between them, the cylinder a so v tliiinble at opposite sides ofthe division wallV thereof.

ln testimony whereof lhave signed my name to this specication in the presence of two subscribing witnesses.

Y WLLIAM PATTEN. Witnesses ISAAC B. OWENS,

E. l. MGLAUGHLIN. 

